冬季供暖对沈阳市各功能区4种大气污染物浓度的影响

目的]研究冬季供暖对沈阳市不同功能区4种大气污染物浓度的影响。方法]根据沈阳市2013年全年11个监测点位的PM10、PM2.5、SO2、NO2实时监测数据,分析4种污染物浓度的月变化规律,并应用主成分分析方法对供暖期和非供暖期该市6类功能区4种污染物对各功能区的影响进行分析。结果]污染物PM10、PM2.5、SO2的浓度受供暖影响月变化明显,NO2的浓度受供暖及降水的双重影响月变化规律与其他3种污染物有较大不同;供暖期工业区各类污染物浓度最高,商业交通居民混合区供暖期和非供暖期各类污染物浓度均较高,供暖期农村和风景名胜区较其他点位污染物浓度最低;农村、商业交通居民混合区点位NO2浓度最高。结论]该研究可为进一步调控与治理沈阳市大气污染提供理论支撑。

Influence of Period Heating on Four Atmospheric Pollutants Contents of Different Areas in Shenyang City

Objective ] The research aimed to study the influences of period heating in winter on the four atmospheric pollutants contents of dif- ferent areas in Shenyang City. Method] The content changes of four atmospheric pollutants （PM10, PM2.5, SO2 and NO2 ） across the months of 2013 was analyzed based on data of 11 monitoring points under 6 air environmental function areas in Shenyang. Meanwhile, the Principal Compo- nent Analysis （PCA） was used to detect the relationships among period heating, concentrations of four atmospheric pollutants and air environmen- tal function areas. Result ] The results showed that period heating influenced remarkably on contents of PM 10, PM2.5 and SO2, which presented ap- parently on month changes. Concentration of NO2 was influenced by both period heating and precipitation,which showed different month changes compared to other three atmospheric pollutants. Industrial zone had most atmospheric pollutants during heating period while commercial traffic res- idents mixed zone had higher atmospheric pollutants both in the heating period and in non - heating period. Rural area and scenic spot had lowest concentration of four atmospheric pollutants during winter time. For concentration of NO2 ,rural area and commercial traffic residents mixed zone were higher than other air environmental function areas through 2013. Conclusion] This research could provide scientific supports for the further adjustment and control of air pollution in Shenyang City.